When you gotta go, you gotta go. Plus, she’s telling the caller (who supposedly has the “problem”) to “hold”. This is just another example of Rubes’ recent fascination with scatalogical humor, and these samples are starting to get a bit old (and smelly).

Now if this were a 1930’s animated cartoon, she would answer the phone “Bladder Emergency Hotline” and strange noises would come out of the earpiece, so she’d hold the receiver in front of her face to stare into the earpiece and a stream of water would suddenly hit her in the eye.